110 Dr. F. B, White on new Species 



Kroyer gives Norway, with doubt, as the habitat of his specimens 

 of this species. 



EXPLANATION OF THE PLATES. 



Plate III. 



Fig. 1. Arcturvs haffini, var. Feildeni; natural size. 



Fiff. 2. Anmiyx giilostis ?, sliglitly enlarged : a, head and antennas (lateral 

 view) ; ft, maxilliped ; c, d, hands of first and second pairs of 

 legs ; e, end of postabdomen, showing the form of the third 

 segment ; f, terminal segment and last pair of uropoda ; all much 

 enlarged. 



Fig. 3. Onesimus Edtvardsii, slightly enlarged : a, head and antennae 

 (lateral view) ; b, maxilliped ; c, d, hands of first and second 

 pairs of legs ; e, end of postabdomen, showing form of third 

 segment (lateral -view) ; /, terminal segment and last two pairs 

 of uropoda ; all much eiilarged. 



Plate IV. 



Fig. 1. Branchipus {Brancliinectd) arcticus, greatly enlarged : a, one of 



the large prehensile antennae ; 6, one of the branchial feet ; 



c, caudal appendages ; all still further enlarged. 

 Fig. 2. Lerncsopoda arctnri, greatly enlarged : a, outer antemiae ; b, first 



maxilliped ; further enlarged. 

 Fig. 3. Nymphon hirtvm, var. obtusidigitum, natural size : a, mandible ; . 



b, c, one of the appendages of the fii'st and second pairs ; eu- 



largred. 



XV. — Descriptions ofneio Species of Heteropterous Hemiptera 

 collected in the Hawaiian Islands hy the Rev. T. Blackburn. 

 —No 1. By F. Buchanan White, M.D., F.L.S. 



Cydnidae. 

 Oeotomus subtristis, n. sp. 

 G. subovatus, piceo-niger, subnitidus, pronoti margine postico, sciitelli 

 apicc, pedibus antennisque piceis, harum articulorum apicibus et 

 toto articulo ultimo, necnon tarsis piceo-luteis ; membrana sor- 

 dide albida, apicem abdominis paullo superante. Marginibus 

 capitis et lateralibus thoracis paueis pilis sat longis ciliatis. 

 Capite obtusiuscule rotundato, margine antico subreflexo, lobis 

 lateralibus parce punctulatis, lobo centrali ad apicem baud angus- 

 tato ; antennarum articulo secundo quam tertius paullo brevioro, 

 tertio, quarto, quiutoque subaequilongis, duobus ultimis fusiformi- 

 bus. Pronoto antiee et ad latera irregulariter rudeque punctato ; 

 disco Iffivi, fovea parvaiu medium, et pone medium fovea majorerude 

 punctata utrinque instructo; lobo postico 5 vel 6 rugis transversis 

 plus minus punctulatis instructo ; angulis posterioribus laevibus 



