The Dermatoptcra. 289 



2.2. Abdominis segmenta nonnulla spi- 

 nosa, haud cristata. 

 3. Segmenta 2-5 abdominis utrinque 



spinis binis armata 3. decolyi, Borm. 



3.3. Segmenta nonnulla abdominis la- 

 teribus utrinque spinis singulis 

 armata. 

 4. Forceps (^ sensim incurva, 

 haud constrictus. 

 5. Segmentum 6 inerme ; species 

 africana^. 

 6. Segmenta 2-4 spinosa. For- 



cipis bracchia bidentata . 4. cungo, Burr. 

 6.6. Segmenta 2-5 spinosa. For- 



cipis bracchia unidentata. 5. yariazzi, Borelli. 

 5.5. Segmenta 2-6 spinosa ; species 



americana 6. quelchi, sp. n. 



4.4. Forceps primum parallelus, de- 

 inde constrictus. 

 5. Segmenta 2-4 spinosa. 



6. Elytra ala^que rugulosa. . 7. tarsata, Westwood. 

 6.6. Elytra alaeque laevia . . 8. trispinosa, Dohrn. 

 5.5. Segmenta 2-5 spinosa. 



6. Pedes unicolores .... 9. -pugnax, Kirby. 

 6.6. Pedes testacei, et infiiscati . 10. qnadrispinosa, Dohrn. 



Forcipula quelchi, sp. n, 



Statiira majore ; nigra ; pronotum quadratum ; elytra et alse 

 rugulosa ; abdomen segmentis 4, 5, 6 spinis parvis obtusis rectis 

 armatis ; segmentum ultimum dorsale lajvius, medio impressum ; 

 forcipis bracchia triquetra, valde elongata, sensim incurva, haud 

 constricta, margine interne medio dente ibrti acuto armata. (^ . 



Long, corporis . . . 23"7 mm. 

 ,, forcipis . . . 18'8 „ 



Hob. British Guiana (1 $, Queleh, 89-127, in B. M.). 



This is the second known American species of the 

 genus ; it differs entirely from F. americana in the colour 

 of the elytra and in having spines, but not a spined crest, 

 on the sides of the basal abdominal segments. It more 

 nearly approaches F. quadrispinosa, Dohrn, but differs in 

 the not constricted forceps, the smaller abdominal spines, 

 and in its habitat. 



