( •'^71 ) 



bearing a very large basal tooth and the small one being merely ronnded-dilated 

 at the base. In the fore tarsus the olaws are placed close together as in the other 

 tarsi, and ventrally to them there are five bristles, fonr being short and obtuse 

 and the fifth long, pointed and twisted. There is a patch of short hair at the 

 apex of the fore tibia (?), which corresponds to the male-tuft of other species. 



Immature specimen (PI. XII. fig. 3. 4). — The abdomen has far fewer bristles 

 than in the adult female, above as well as beneath, and the pro.\imal tergites 

 have no particularly long ones. The suture which in text-fig. 2 sej>arates the 

 meso- from the metasternum is only slightly indicated, and the iutercoxiil meta- 

 sternal process is broad at the apex and mnch less ciiitinised. The fore tarsus 

 consists of only two distinct segments instead of three, and the longest bristles 

 among those which are placed ventrally of the claws is straight, not twisted. 

 The mid tarsus (only one is preserved, the hind tarsi also being missing) has 

 three segments, the third being twice as long as the first two together. 



The British Museum collection contains : 



1 ? adult (type oi b/rae) from Secunderabad, India, taken oS Megadeima lijva. 



1 ? adult from China, taken off a bat in the Brit. Mus. 



1 immature from China, taken off a bat in the Brit. Mus. 



Tlie last two examples were apparently found on the same specimen of bat. 



Specimens in other collections : 



The whereabouts of the two original examples from Amoy (a i and an 

 immature specimen) are not at present known. 



2. Genus: Eoctenes Kirk. (1906). 



Antennae breves, capitis angnlos basales acutos non attingentes. — Genotypus : 

 E. spasmae Waterh. (1879). 



Polycte/iea Gii/L, Waterhoiise (nee ttiglioli, err. det.), Tmim. Ent. Soc. Lmid. p. 312 (ISTfl). 



Eoctenes Kirkaldy, Ciuiad. Ent. .xxxviii. p. 375 (190G) (type : spasmae). 



Ctennpla:r Horvith, Ann. ^^us. JVat. FT/inr/. viii. p. 572 (1910) (type : ni)cleridix). 



Syncrotus HorvAth, I.e. p. 573 (1910) (type : lalpae). 



Hemischizus Hovdrth, I.e. ix. p. 336 (1911) (nom. nov. loco Si/iicroti preoco.). 



The three species which are here united can easily be distinguished from 

 Polyctenes by the short antennae (cf PI. XIII. fig. 5. 8). The head is widest at 

 the base and closely applied to the thorax, gradually narrowing forward. In front 

 of its dorsal comb there is at each side a transverse row of very minute spines. 

 The two oblique rows of dorsal bristles remain widely apart, instead of nearly 

 uniting behind as in Poli/ctenes. The basal angles are pointed, being directed 

 backward and not bearing a long bristle on the npper side. The adnlt specimens 

 have three dorsal combs. The posterior spines of the gular comb do not project 

 (or exceedingly little) beyond the lateral margin of the head. 



The species fall into two natural groups, one corresponding to Eoctenes 

 (= Si/ncrotus = Hemischizus), the other to Ctenoplax. But as the one group 

 consists of only one species, and the other of two which are so closely allied that 

 they may even turn out to be geographical representatives of each other, further 

 discoveries should be awaited before the species are separated generically. 



1. Proboscis with fonr segments ; intercoxal process of prosterunm more or 

 less pointed. spasmae and intermedins. 



2. Proboscis with three segments ; intercoxal process of prosternnm obtuse, 

 with tip distinctly emarginate. nycteridis. 



