A NEW PHALACHOPTERYOID SPECIES AND GENUS FROM SPAIN. 329 



below the spiracle is a one-haired tubercle (probably vi). On the 

 9th abdominal, i is almost fused to outer end of fused ii, iii (?) 

 has one long hair, and is followed by three tubercles, each with one 

 hair. The specimen is not satisfactory here ventrally. The large 

 anal plate (10th abdominal), l-5mm. across, has three long hairs on 

 either side, it is straight in front, the remaining margin being a 

 continuous curve. The clasper has a large chitinous plate carrying 

 six (or more ?) hairs. Each of the three thoracic segments has a 

 large square dorsal plate (smallest on 3rd), dark, without pale marking, 

 except median line. Each has four hairs on either side along its anterior 

 margin, in addition, on the 1st is a central hair, and the 1st spiracle to- 

 wards its lower posterior angle. Below this plate (on each segment) is a 

 plate carrying two hairs, with a small plate and hair in front of it. 

 Below this, again, on the 2nd and 3rd segments, a plate without hairs, 

 and below these the plates that are involved in the true legs. Behind the 

 middle of the dorsal plates of the 1st and 2nd segments is a small tubercle 

 with two small hairs. The most remarkable feature observed is a very 

 definite spiracular structure between the 2nd plate of the 2nd and 3rd 

 thoracic segments. The legs are carried on transverse plates with 

 median sutures, which appear to be homologous with the median ventral 

 plates as represented conjoined on the 1st abdominal. On all these seg- 

 ments they have an outer plate ranging with the proleg plate, and on 

 the metathorax there is, posterior to the main one, a plate that is not 

 represented elsewhere. The secondary hair-point at the front margin 

 ventrally is present on the 2nd and 3rd thoracic. In the middle line, in 

 front of the main plate is, soldered to it by sutures, the rounded 

 eminence that looks almost like a palpus, and carries three hairs. The 

 femur is jointed between this and the main plate, a hardly separated basal 

 piece representing the trochanter (?). The femur carries two strong 

 bristles ventrally ; the tibia apically, two dorsal (outer) bristles, two 

 ventral (inner), and one lateral (front) ; the third (tarsal) joint carries 

 three hairs and the well-developed claw. The black head carries ten or 

 eleven long hairs on either side. The ocelli are in a curve of five, 

 with a sixth central. The antennae have a very slender chitinous ring 

 as a 1st segment, a long square one as 2nd, which carries a long 

 hair, several minute ones, and a small mammilla as a 3rd segment. 

 The maxilla; are of complicated form, each of their palpi consists of a 

 large basal piece carrying externally a two-jointed process of some 

 thickness, internally a hair or two and a short ring surmounted by a 

 bristle (or two), and four small short thick baton-like palpi. The 

 labium looks something like a spur, the spinneret standing forward as 

 the spike, the basal half of this is beautifully fluted. The palpi are 

 lost or not made out. The jaws are strong and heavy, square, with 

 three well-pronounced teeth, and two inner ones hardly distinct, outside 

 the 1st tooth, have a broad outer slope. There are two hairs on the 

 jaw. The plate carrying three hairs forms a sheath for the proleg. It 

 would be a tube, or, rather, case, surrounding it, but that it thins out 

 and is wanting on the inner side. The hooks of the prolegs are 

 well curved and strong, and vary in number from 17 to 21 in this 

 specimen. The general surface is closely set with fine black points, 

 which range themselves in rows m various directions over short dis- 

 tances, and, in places, have a very elaborate arrangement of collections 

 of circles and other curves. This is observable along the incisions. 



