250 ENTOMOLOGICAL SOCIETY 



ing the cephalothorax separated into parts by a transverse mem 

 branous suture. In Schizomus there are two divisions, a large 

 ovoid anterior, and a small, transversely oblong posterior, to 

 which the third and fourth pairs of legs are attached. In Triplomus 

 the posterior plate is subdivided by a median suture into two sub- 

 quadrate parts, while in Hubbardia a pair of small, narrowly 

 subtriangular plates are intercalated in the transverse suture. 

 Although of small size, these are sufficiently large and well chiti- 

 nized to render it extremely improbable that they have been over 

 looked in Triplomus by such careful arachnologists as Thorell and 

 Kraepelin. The habit is very similar to that of Triplomus, the 

 type of which I had the pleasure of seeing at Hamburg last year, 

 through the kindness of Professor Kraepelin, who was then en 

 gaged in his revision of the Uropygi. 



Schizomus was described from Ceylon, and Triplomus from 

 Burma. The discovery by Mr. Hubbard of a representative of 

 this group in the desert region of southern California accordingly 

 extends the known geographic distribution of the family to the 

 western continent and to a new zone and climate. That so 

 peculiar a type, which has until this time eluded all collectors, 

 should surrender to Mr. Hubbard is, however, but one of many 

 testimonies to our President's unrivalled ability as a field naturalist, 

 and may, with his permission, bear his name. The formal de 

 scription follows : 



HUBBARDIA, new genus. 



V 



Eyes entirely wanting. 



Mandibles chelate ; movable finger closing outside the produced in 

 ferior corner of the large, subquadrate proximal joint; the movable finger 

 is flattened or channelled in the middle below, with the lateral margin 

 entire and the mesial regularly pectinate with closely placed simple bris 

 tles ; above these is a series of curved, barbed hairs; the inferior corner 

 of the basal joint is produced into a process armed with two large and 

 three or four small teeth ; this joint is also provided with numerous long, 

 barbed hairs. 



Maxillae six-jointed and provided with a simple claw; coxae with long 

 processes clothed on the mesial face with numerous barbed hairs ; tro- 

 chanter moderately produced distad below and armed on its mesial face at 

 the base of this process with a small conical spine, the only prominence 

 of this joint, excepting the somewhat elevated bases of the scattering 

 hairs. Femur, patella, and tibia decreasing in thickness but of subequal 

 length, unarmed except by the prominent bases of hairs, of which the 



1886), the new name Triplomus is here substituted. The type is T. grassii 

 (Thorell, /. c., p. 554, pi. v, fig. i). These changes in nomenclature have 

 been incorporated in the proof as far as seemed practicable without too 

 extensive recasting. 



