232 Transactions. — Zoology. 



Length, 25mm. ; pronotum, 7mm. ; thorax, 14mm. ; 

 abdomen, 14mm.; fore tibia, 21mm.; hind tibia, 38mm.; 

 hind femur, 32mm. Width at the mesonotum, 9mm. 



Locality. — Forty-mile Bush, near the head of the Mana- 

 watu River. In Hmestone caves (Colenso). 



The foregoing description is taken from the type specimen, 

 which is a male. 



Pachyrhamma novse-seelandise. 



Pachyrhamma novce-seclandice, Brunner, Verb, z.-b., Wien, 



xxxviii., p. 302, pi. vii., fig. 29 (1888). 



This species, described from females only, is of the same 

 colours and size as P. spehtncoi, and the spines on the femora 

 are the same, except that no mention is made of any on the 

 middle femora in P. novcB-seelandice. It is, however, expressly 

 stated in the generic characters that there are no spines on 

 the upper surface of the fore and middle tibise, and no pecu- 

 liarities in the antennas are mentioned. From P. fascifer it 

 differs only in having four or five spines on the lower surface 

 of the fore femora instead of two, and in no mention being 

 made of the two spines on the lower surface of the middle 

 tibiee. 



Brunner's type is a female, and the figure shows the joints 

 of the antennae as cylindrical ; probably it is the female of 

 P. sj)eliincce. 



Pachyrhamma fascifer, 

 MacrojKttJms fascifer, Walker, Cat. Dermaptera Saltatoria in 



Brit. Mus., part i., p. 207 (1869) ; <? . MacropatJms alius, 



Walker, I.e., p. 208 (1869) ; $ . 



This species has the same colours as P. speluncce ; but no 

 mention is made of any peculiarities in the antennae, nor of 

 any spines on the upper surface of the fore tibiae. The fore 

 femora are said to have only two spines below, and the middle 

 tibiae three in each row, while P. spelunco} has five and four 

 respectively, M. fascifer- is said to have the fourth joint of 

 the maxillary palpi much longer than the third, while in 

 M. altiis the two joints are said to be of equal length. There 

 is no other difference. 



Genus Pleioplectron, gen, nov. 

 Form small and slender. Head vertical. Antennae thick, 

 closely approximated at their bases; first joint very thick; the 

 second much shorter, inflated ; the third not much longer 

 than the second ; the rest small, vasiform or cylindrical. 

 Fastigium narrow, rising abruptly, sulcate. Eyes subovoid, 

 not very prominent, Pronotum rounded anteriorly and pro- 

 jecting over the head ; posterior margin straight. Legs rather 

 long. Fore coxae spined, near together but not touching; 



