652 PROCEEDINGS OF TUE NATIONAL MUSEUM. vol.17. 



spine; second maxillae fused, except for a short distance at the 

 center, bulla disk-shaped; maxillipeds stout, terminal claw slender; 

 egg strings club-shaped, and as long as the trunk. 



Oeneric characters of w«Ze.— Cephalothorax ovoid, in line with the 

 trunk and separated from the latter by a distinct groove; no dorsal 

 carapace; trunk two-tliirds the length and only one-fifth the diameter 

 of the cephalothorax, distinctly divided into three segments and 

 terminating in two lancinate plates. 



First and second antennae close together at the upper and anterior 

 corner of the cephalothorax, a considerable distance from the mouth 

 tube; first antennae three-jointed; second pair uniramose and two- 

 jointed; maxilUpeds relatively enormous, the claw very powerful, 

 bent so as to form three-quarters of a circle, and sharp pointed, wath 

 an accessory spine on the inner margin. 



Type. — TTiysanoteUa multif/mbriata (Bassett-Smith). 



{Thysanotella, the diminutive of TJiysanote.) 



Remarlcs.— This genus is estabhshed to include a single species 

 described and figured by Bassett-Smith (1898, p. 96, pi. 6, fig. 2, a 

 to g). Both sexes are known, and each differs so markedly from the 

 types of the other genera that the validity of the genus is securely 

 established, provided Bassett-Smith' s description was correct. In 

 the female the long and wormhke cephalothorax is hke that found 

 in EuhracUella, Clavella, and Cliaropinus, but very different from that 

 found in TJiysanote; the fimbriate processes are all on the trmik, and 

 there are two pairs of posterior processes. The entire make-up of the 

 male is peculiar; the body is reduced to less than a quarter the size of 

 the cephalothorax, but is distinctly segmented; the two pairs of 

 antennae are away up on the back of the cephalothorax, and the 

 maxiUipeds are enormously developed and pecuhar in position. 

 Bassett-Smith himself says of this male: "It shows distinctly the 

 BracUella form." But from the figure here given (fig. H, pi. 26) it 

 wiU be seen that it conforms far more to Charopinus than to BracM- 

 ella. He tells us that he only succeeded in maldng a rough drawing 

 of this male and that he lost the specimen wliile preparing it for 

 mounting. But granting this, no amount of correcting or finisliing 

 could ever cause his figure of the male to bear any resemblance to 

 that of BracJiiella or TJiysanote. 



Genus CHAROPINUS Kr^yer. 



Generic cJiaracters of female. — Cephalothorax elongate, cyhndrical, 

 more or less distinctly separated from the trunk, sometimes turned 

 back at right angles or even against the dorsal surface of the trunk; 

 usually no dorsal carapace; trunk pear-shaped, enlarged and often 

 flattened posteriorly, and carrying there a pair of filiform posterior 

 processes, dorsal to the egg strings; no genital process, abdomen or 

 anal laminae. Fii-st antennae indistinctly four-jointed; second 



