226 T- V - HODGSON, 226 



Heteropallene dubitans. 



Specific characters. 



Body robust, with lateral processes of varying length and separated by narrow intervals. 



Cephalon directed downwards, widely expanded. 



Ocular tubercle stout, of small elevation, bearing four small and widely separated eyes. 



Palps reduced to a single jointed rudiment. 



Legs without auxiliary claws. 



The body has rather a curious form, it is very robust with the. lateral processes long, separated by 

 narrow but varying intervals. The posterior pairs are however very short and are practically fused, the 

 abdomen projecting but a little beyond and embedded between them. The width of the body is greatest 

 across the first two pairs and very much narrower across the posterior pair. In a natural position of the 

 animal the length of the cephalic segment to the rest of the trunk is as 4 to 5. 



Immediately in front of the first pair of lateral processes the first segment of the body projects 

 forwards in an angular manner and just behind this angle is a low but broad ocular tubercle bearing four 

 diminutive eyes which are widely separated from each other, especially laterally. 



The cephalon is directed downwards at a considerable angle and dilated distally, the conspicuous 

 neck is strengthened by a ridge passing forwards from the "ocular pyramid". 



All the lateral processes distally and the antero-lateral angles of the cephalon bear a few small setae. 



The proboscis is stout, short and rounded at the extremity, it is almost vertical in direction. 



The cheliferi are well developed; a short and stout scape arises from the antero-lateral margins of 



the cephalon and is setose distally. The chela is strong and setose, well on to the immoveable finger 



which also possesses a row of five progressively lengthening setae on its inner margin, 



at its base where it is swollen. The dactylus is longer and more curved and both are 



beset with a small number of rather closely set teeth. 



Rudiments of the palps lie underneath the cheliferi, each is a slightly curved 

 Joint lying close to the proboscis. 



The ovigers are ten-jointed and rise immediately in front of the first pair of 



lateral processes. The first Joint is extremely small, the next two are much longer and 



subequal, the fourth and fifth are each of them about twice as long as the third, the 



sixth is short and bears a few setae, the seventh and eighth are longer and subequal, 



Fig. 4. Heteropallene the ninth is shorter and the tenth longer than the preceding but scarcely as long as 



the seventh or eighth. There is no terminal claw. The four terminal joints are each 



provided with a single row of denticulate spines which are rather numerous. These comprise a shaft with 



upwards of a dozen rather rounded and close set teeth on each side, the entire structure having an 



oval outline. 



The legs are not long and are sparsely covered with setae, but in no definite manner, they are 

 however most conspicuous laterally. The distal fringes are quite normal and do not exhibit any special 

 features. Of the three coxae the second is a little the longest, not so large as the other two together. 

 The femur and first tibia are subequal in length, the second tibia is a little longer. The tarsus is very 

 small and bears a small number of spinous setae ventrally, of these one is much larger than the rest. The 

 propodus is curved, covered sparsely with small setae, ventrally and proximally are two stout spines, and 



